Radio or radiophone receiving set demonstrator



March 27, 1928.

A. R. WOLFE RADIO 0R RADIOPHONE RECEIVING SET DEMONSTRATOR Filed Feb. 23, H26 3' Sheets-Sheet 1 ARCHIE R. WOLFE Il QN INVENTOR.

ATTORNEY March 27, 1928. 1,663,743

A. R. WOLFE RADIO OR RADIOPHONE RECEIVING SET DEMONSTRATOR Filed Feb. 23, 1926 3 sheets-sheet 2 A uns R WOLFE INVENTOR;

vesfyaaa ATTORNEY March 27, 1928. 1,663,743

' A. R. WOLFE RADIO OR RADIOPHONE RECEIVING SET DEMONSTRATOR Filed Feb. 23, 1926 3 Sheets-Sheet 3 A RcH/E I? VVOLFE INVENTOR.

BY mm ATTORNEY Patented Mar. 27,

A RCH IE WOLFE, OLE SUMMIT, NEW'JERSEY.

RADIO 0R RADIOPHONE RECEIVING SET DEMONSTRATOR.

Application filed February My invention relates to improvements in the design and equipment of stationary or rotai stands or )edestals of circular s uare I octagonal or semicircular, semi-square, S8111l. octagonal or quarter-circular, quarter-square, quarter-octagonal or other similar shape, so that they are especially adapted to afford'a means of supporting and displaying one or more loop aerials, one or more loudspeakers and three or more radio or radiophone receiving sets, and of testing, operating or demonstrating any one of said three or more radio or radiophone receiving sets, one or more loops and one or more loudspeakers- The objects of my invention are first, toprovide a means of quickly and efliciently connecting electrically any one of three or more radio or radiophone receiving sets to one or more of the following: one or any one of two or more aerials, one or any one of two or more loops, one grounded lead, one or any one of two or more filament current voltages, one or any one of two or more plate current voltages and one or any one of two or more loudspeakers as may be re quired for the purposes or testing, operating or demonstrating said receiving sets; and at the same time, to have the respective leads so connecting each receiving set to said aerial, loop, grounded lead, filament current voltage, plate current voltage and loudspeaker practically free of dead end or noncurrent carrying conductors and of practically the same length and ohmic re sistance; second, to povide a means for con trolling the multipole multibranch electric switch which connects any one of the said.

receiving sets to one or more of the said aerial, loop, g

plate voltage and. loudspeaker as may be required, from a point near to or within convenient reach of said receiving set; third,

to design a stationary or rotary pedestal or stand which will safely support and most effectively display three or more radio or radiophone receiving sets, one or more loops and one or more loudspeakers for purposes of test, operation or demonstration; fourth, to produce an apparatus readily designed to afford a meansof supporting, displaying and quickly testing, operating and demonstrating any number oriall of three or more instruments or units requiring a source or sources of electric current for their test, operation or demonstration; fifth, to prorounded lead, filament'voltage,

23, 1926. Serial No. 90,224.

platform typeof rotary pedestal, adapted to accommodate one or more loudspeakers. and one or more loops on the elevated platform and eight radio or radiophone receiving sets or other units size 7" by 7-by 18 c or smaller on the lower. platfoim is illustrated in the, accompanying drawings, in which Fig.1, is a view of the entire apparatus on the approximate doublescale' 2% inches-equal 1 foot for horizontal measurements and 1% inches equal 1 foot'for vertical measurements; 2, .is a sectional View of the entire apparatus on the broken line 2, 2, Fig. 1.; F ig. 3, is a View looking down from perpendicularly above the center on to the top of the demonstrator with the,

, elevated platform trap doors open, and the battery shelf and feed and cut out switch and its connections removed, showing the multipole multibranch electric switch pro portionately enlarged, its electrical connections to the unit binding post boards and the method of extended control of said switch from without the platform elevation;

The batteries shown in Fig. 2, are merely forthe purpose of illustration and form no part of this invention.

Similar numerals refer to similar parts throughout the several views. r I 1 To the metal base ,1, is secured the metal pipe shaft 2, to which is secured themetal bearing bushing'3, by means of the removable metal pin 4. 1 1 I I The wooden crown 5, is rigidly secured to i the wooden body 6, which is adapted to rotate on shaft 2 by means of the metal supporting and pivot bearing/7, which issecuredto said crown by wood screws, and by means of the balance bearing 8, which is secured to said body 6 with wood screws;

Through the hinged hand hole door 9, access is had tothe bearings? and 8, and to other working parts within the, body 6.

The ring 10, made of insulating material is secured to shaft 2 by machine screws and supports the metal collector ring 11, to which is connected the ground lead 12, and on which bears the spring metal brush 13.

The metal brush holder14, supports said brush 13, and is secured to the insulator 15, which is secured to an arm of bearing 8.

It is now readily perceived that the ground lead is continued from the stator to the rotor part of the pedestal through the collector ring 11 and brush 13 to the brush holder 14.

Thelower platform 16, made of wood is secured to the body 6 by means of angle irons and the braces 17, and is provided with a rib 18, to hold the receiving sets or other units on said platform. The wooden elevated platform 19, is supported by and secured to the wooden platform elevation 20, which is secured to the said lower platform 16.

The elevated platform 19, is provided with first, a rib 21, which holds the loud speakers, loops or other instruments in-place on said platform; second, the hinged trap doors 22, through which access is had to the main feed and cut out switch 23, batteries if used, removable wooden shelf 24, multipole multibranch electric switch 25, the insulation unitbinding post boards 26, insulation battery terminal boards 27 and all electrical connections within the platform elevat1on third, the cross frame 28, whlch partly supports the trap doors 22, and to which the aerial entering. insulator 29, the loop jack 30, and the loudspeaker jack 31, are secured.

Eight insulation binding post boards 26, on each of which are mounted seventeen metal binding posts 38, are secured with wood screws over slots inthe platform elevation 20, at points around the inner surface of the latter, so that said binding posts 38,

protrude about four fifths of the way through said slots, making the former accessible from without said platform elevation.

Thecircuits are completed tl'irough the demonstrator by the legs as follows: one leg from each the aerial insulator 29, ground connection brush holder 14, negative loop ack 30, positive loop jack 30,-ne'gative 1.5 volt filament current, positive 1.5 volt filament current-,negative 4 volt filament current, positive 4' volt filament current, negative 6 volt filament current, positive 6 volt filament current, negative plate current, positive 22 voltplate current, positive 45 volt plate current, positive 67 volt plate current, positive 90volt plate current,n ega'- tive lo'udspeakerjack 31 and positive loud speaker jack 31;connect to respective main distributing poles of the inainwfeed and out out switch 23, pass through theknife blades to the'branch poles of said switch, thence to respective. main binding posts 32, through the binding posts 38, of each unit binding post board 26, the said legs of the circuits can be completed, as required to the terminals of a respective radio receiver or other unit, by flexible leads.

The latches 39, drop down and lock the extension control rods 37 in the open position, so that the latch nearest any one binding post board 26, must be lifted before the binding posts 38 of said binding post board can be connected in circuit by operation of the multipole lnultibranch switch 25.

On. the battery terminal board 27 are mounted eight binding posts 41, to which the terminals of the storage plate and'fila-. ment batteries, if used, can be connected from within and to which the terminals'of the battery charging'source of current can be conveniently connected from without the platform elevation 20.

In installing the demonstrator, it is first placed inthe desired location and the ground load 12, is passed from underneath the base 1 out through the recess 40. The demonstrator is then secured with la screws or bolts through holes in base 1, to the floor. The ground lead 12, is then run along the floor or through the fioor and connected to the ground. The aerial lead-in, after passing through a lightning switch and arrester is brought down from vertically above the aerial insulator 29, to which it is connected by a flexible lead. 3

For testing operating or demonstrating receiving sets, first, the plate and filament batteries, if used, are placed in the proper position within the platform elevation 20, and their terminals properly connected to the knife blade poles of the feed andcutout switch 23, and to the binding posts 41; sec ond, the loops and loudspeakers to be demonstrated are placed on the elevated platform 19, and their plugs inserted in the loop jack 30, and the loudspeaker jack 31,. respectively as desired; third, each receiv-. ing set to be tested, operated or demon stratedis then placed on the lower platform 16, and their terminals properly connected to the metal binding posts 38, of a respective unit binding post board 26, by means of lUU flexible leads, in the order and as shown marked on said binding post board by the following abbreviations of the legs of the circuit-s: A, G, neg. 'L, pos. L., neg. 1.5F, pos

1.515, neg. 4F, pos. 4F, neg. 6F, pos. 6F, neg. 13, pos. 22 13, pos. 45B, pos. 67 13, pos. 90B,

' neg. S and pos. S respectively.

The demonstrator is now ready for operation and any one of the receiving sets can be connected to or disconnected from one or more of the following: aerial, loop, grounded lead, filament current voltage, plate current voltage and loud speaker as required for test, operation or demonstration by simply lifting the latch 40, and moving the extension control rods 37 nearest said receiving set, to the closed or open position respectively.

, Any one of the loops and loudspeakers can be connected in circuit by connecting their plugs in their respective jacks as desired.

The selection of aerial 0r loop, filament current voltage, and plate current voltage for each particular receiving set as required for test, operation or demonstration is made by properly connecting its terminals by means of insulated flexible leads to the bind ing posts 38, of its respective binding post board 26.

The branch binding posts 34, of each branchway 35, are connected by insulated leads to respective binding posts 38, of a respective unit binding post board 26.

I claim:

1. In a stand for the demonstration of radio sets and the like, a base and an upright pedestal, a cylindrical body rotatably mounted upon the bearings upon the pedestal, a platform rigidly affixed to the cylindrical body, a cabinet mounted upon the platform with its sides at a distance Within the periphery of the platform, the platform forming a. shelf around the cabinet, compartments within the cabinet for the storage of batteries, a plurality of series of binding posts upon the cabinet, a loop jack within the cabinet, a loud speaker jack within the cabinet, a ground connection within the pedestal and a means for connecting the loop' jack to one series of binding posts, for connecting the loud speaker jack to another series of binding posts, for connecting the ground connection to another series of binding posts, for connecting the batteries to another series of binding posts.

2. In a stand for the demonstration of radio sets and the like, a base and an upright pedestal, a cylindrical body rotatably mounted upon bearings upon the pedestal, a cabinet mounted upon the platform with its sides at a distance Within the periphery of the platform, the platform forming a shelf around the cabinet, compartments Within the cabinet for the storage of batteries, a plurality of series'of binding posts upon the cabinet, a loop jack within the cabinet, a loud speaker jack within the cabinet, a ground connection Within the pedestal and a single means for connecting the loop jack to one series of binding posts, for connecting the loud speaker jack to another series of binding posts, for connecting the ground connection to another series of binding posts, for connecting the batteries to another series of binding posts, the means further constituting a means for shifting the connection of each individual unit within its individual series. In a stand for thedemonstrationof Iradio sets and the like, a base and an upright pedestal, a cylindrical body rotatably mounted upon bearings upon the pedestal, a platform rigidly affixed to the cylindrical body, a cabinet mounted upon the platform with its sides at a distance within the periphery of platform, the platform forming a shelf around the cabinet, compartments within the cabinet for the storage ofbatteries, a plurality of series of binding posts upon the cabinet, a loop jack within the cabinet, a loud speaker jack Within the cabinet, a ground connection within the pedestal and a single means for connecting the loop jack to one series of binding posts, for connecting the loudspeaker jack to another series of binding posts, for connecting the ground connection to another series of binding posts, for connecting the batteries to anv other series of binding posts, the means further'constituting a means for shifting the connection of each individual unit Within its individual series and consisting of. a multipole multibranch electric switch.

4. In a stand for the demonstration of radio sets and the like, a base and an upright pedestal, a cylindrical body rotatably mounted upon bearings upon the pedestal, a platform rigidly affixed to the cylindrical body, a cabinet mounted upon the platform withits sides at a distance Within the periphery of the platform, the platform forming a shelf around the cabinet, compartments Within the cabinet for the storage of batteries, a plurality of series of binding posts upon the cabinet, a loop jack Within the cabinet, a loud speaker jack Within the cabinet, a ground connection'within the pedestal and a single means for connecting the loop jack to one series of binding posts, for connecting the loud speaker to another series of binding posts, for connecting the ground connection to another series of binding posts, for connecting the batteries to another series of binding posts, the means further constituting a means for shifting the connection of each individual unit'vvithin its individual series and consisting of a multipole multibranch electric switch, and means upon the outside of the cabinet for operating the switch. a f 

